code: def f(*xs):
      if xs:
          return random.choice(xs)
      else:
          return child.remote(*xs)
  
file_path: ray/release/long_running_tests/workloads/many_tasks_serialized_ids.py
imports: import time
  import random
  import numpy
  import ray
  from ray.cluster_utils import Cluster
  from ray._private.test_utils import safe_write_to_results_json
label_desc: Use image node_id 4 for calling a global function with example usage: f() and returns: random, child